Flour sifter



May 31,1927. 1 1,630,853

P.,J.ILEONARD ET AL FLOUR S IFTER Filed Feb. 2. 1924 jqezer (l leo/rolz/ Patented 31, 1927. i

PETER J- I {AND R D se n See s-I Siemens, YMnsNE nssienivinnrs. 'ro THE1CH$E ne'r oniini znnx. F "toirY on new YORK, or'nnw Yosiz, N. fY.

" 1 me S am;

pplication fire-a ass 2, 1924. serial mystics 6e.

This invention. relates to a flour sifter of the type commonly used for domestic p urposes, it being the 'o'bjectgof our'invent on to provide certain improvements in the -con-,

structionof suchsifterjs by which a more satisfactory "andrel'i'able' article will be produced.

lVitli this general object in view, an 'llllportant feature of'our invention relates to the provision of an. improved beater oragi tator for the sifter; which is of novel con- 7 struction and which is very efficient in operation. V Another feature of our invention relates to the provision of an improved screen holder in which the rough edges of. the screenare entirely covered and by which the screen is ,securely held in-operative pos1t1on.

Our invention further relates to certain arrangements and combinations of parts which will be hereinafter described and more particularly pointed outin theappended ,claimsj I A preferred form of the invention s shown in the drawings in which Fig. 1 is a sectional side elevation of ourimproved sifter;

Fig. 2 is a sectional elevation showing the construction ofthe beater or agitator; n

Fig. 3 is a detail side elevation showing the joint used in forming the beater;

Fig. 4 is a i along the line 4-4 in Fig. 3;

' Figs- 5, 6 and"? are detail views showing successive steps in assembling the screen and its supporting rim or 'holder; and

Fig. 8 is a detail sectional VIEW. of the sifter handle, taken alon'g the 'line' 8-78 in Fig. 1. I I

Referring to the drawings, we haveshown a' flour'sifter comprising a cylindrical casing or body 10 formed from a single piece v of sheet metal having its edges overlapping and locked together, as indicated at in Fig.1. The casing or body 10 isprov ded with expanded ribsor beads 12 for'tlie pur-,

poseof strengthening the body and is also provided with a groove 13 to receive and hold the rim or holder of the sifting screen.

; The screen holder is of special construce; tion, the details of which are clearly indi i cated in Figs. 5, 6 and7. A'riin or band 15 is first bent to the shape indicated in Fig.

5 and the screen 16 is bentto the semi-spheri 10, as indicated at 25. l

e11 shape showfi 'in Fig-vi? bee its edge 1301110511 mined- ..outward and downward.

The screen and band are 'tl' fen assembled in the 'rel'ationiii dicated in Fig.6 il-anam- .ner portion of the bandf'isijbent u war and outward tof'the position indicated in Fig. 6, thus binding the; edge of the screen as indicated in Fig.-7 ,entirely enclosing and;

protecting the edge of the screen. 1

encloses and protectsthe roughedg esr'of-th e wire screen and which makes separation of f In this way, a verysubstantial and relia- I I able construction-is providedwhich entirelyi' the screen and band practically impossible."

The band or rim is of. such diameter that. it a. a i

can beforced into the groove 13 but cannot easily bedisplacedtherefrom. V

The'beater'or agitator20'is also of special construction and comprises two I circular rings of-thin sheet metal placed at'90 degrees to each other and firmly secured in this position. For securing the partsftogether, we preferably forinsquare perfora-g a central point thereof,- 'through'which :per-

. .forations eyelets 21 may be inserted, as indi-f cated in Figs. 3 and-4. I g These eyelets are also provided with detail sectional view takensquare openings 22 and are designed tofit a square shaft 23by'which the beater or agie Y 5 tator is supported and-operated. "The shaft 23 is bent'atone end tosupport ahandle 1 24 and the parts are retainedin assembled relation "by upsetting for staking the, end "of the shaft 23'outward of the cylinder or body 7 Each ringof'the beater20 a double bevel or approximately ;V section,

isformedwith I les '1' as indicated in ;Fig. -1.. This construction greatly increases the strength ofthe ring and also p ovides an inclined surface wh to force .the flour toward the fscreen with" either direction of rotation and thus (in -5 creases the eficiency of'operation;

A handle '26fisrivetedor otherwise s'ef curedito the side of-the body'10; thi'shandl'e being preferably formed of sheet metal and having an inserted portion 27 (Fig. 8) sebent to final position;-

cured between the folded edges of the-hani 'dle beforethe end portions 1 28'thereof are? 0 ff 1 tions'at both ends of each ring and also at Having thus desciibed'nfir invention and v the operation there 0f; itwill'be jevidelitjthat e have provided fa flour 'sifter of greatly improved mechanictl construction and operzttion; and it will elsebe eiident thait-changesi andinodifi'czitions'canbe made in our inven- 7 tion Without departing frcm the scope'cf the i invention as set forth in the claims'. "Ac:

cordingly,"WedbQnot wish to be limited to the .detztileherein "disclosed, but What we claim-iw 5 F I screen and e jcylindrical s upportingr band therefor, having a' rib' to' interlock With the 'finnei";suriice 9f the siftef bodygfthe loweredge portion "of' the band being bent 11p v we rdly-t0 *fornt a: clamping: flange, said each other at Said intersections m di having eyelets therein; ith I n0n-circn1an openings tofit e -supporting shaft. A i 1- v In testimony Whereefwjehave lieirenntc ZL'ifiX-Gd our signatures. 

